Fuel-supply controller.



C.A W. LBITENBBRGER. FUEL SUPPLY CONTROLLER. APPLIoATIoN FILED uns, 1910.

990,053. A Patented Apr. 18, 1911'.

wy@ er ATT/lR/VEYS UNITED? sTATEs PATENT oEEToE.Y

ICARL W. LEITENBERGER, OF J'OHNSCIOITN,':PENNSYLVANIA.y A

'FUEL-SUPPLY CONTROLLER.

To all whom t may conce-m:

Be it known that I, CARL W. LEITENBER- GER, a citizen of the United States, and a resident of Johnstown, in the county of Cambria and State of Pennsylvania, have invented a new and Improved Fuel-Supply Controller, of which the following is a full,

paratus in which it is burned. In the accompanying drawings, I have illustrated my invention as applied to the furnace of a vertical boiler provided with a Jones underfeed stoker. f

Reference is to be had to the accompanying drawings, forming a partl of this specificat-ion, in which similar characters of reference indicate corresponding parts in both the figures, and in which- -Figure 1 is a vertical section ofthe apparatus 'with parts broken away, and Fig. 2 is a perspective view of the movable member or follower arrangedto follow the rise or fall,

of the fuel in the combustion chamber and tocontrol the. supply of fuel.

A indicates the shell of the boiler, B the fire tubes or smoke tubes, C the combustion chamber, D the incandescent fuel receiver,

E `the grate, E the fuel pusher, F the hop-.y`

per or fuel receiver, from the lower part of which an opening or passage leads to the fuel chamber or combustion chamber C, and G the piston or pusher of the Stoker, which by moving toward the right, supplies additional fuel into the combustion chamber. This piston may also be provided with a projection G', to operate the fuel pusher E. So far the (parts may be of any well-known or approve construction.

According .to my invention, I employ a follower, the position of which varies according to the amount or level of the fuel in the combustion chamber, and the movement of this follower is. utilized to control the operation of the fuel feeder or mechani- Specification of Letters latent.

cal stoker. I have shown the follower made in thc shape of a disk H (perforated so that it will obstruct the rise of the combustion gases as little as possible), adapted to rest on ltop of the bed of incandescent fuel, and secured t'o a lever J, which extends through the wall of the combustionuchamber and is fulcrumed upon said wall at J. The outer end of the lever has a pin-aud-slot connection J2, with an arm `K, `secured to the plug of a-valve or controller L, ,which controls the passage of steam, air orother medium under pressure, through a pi e M. This pipe leads 'to the valve chest containing the Slide ,valve O, the rod O of which has two projections O2, between which the projection Cr of the stoker is arranged to move. The slide valve controls Patented Apr. 18, 1911. Application filed April 5, i910. Serial No.553,475.

the usual ports in a vcylinder I), containing a piston R, connected by a rod R with the `pusher G.

The operation will be readily understood. If the level of the fuel bed D falls as combustion progresses, the follower will move vdown and the outer end of the lever J will by this operation, the follower H and lever J' will move in the opposite direction to that first referred to, causing the valve L to. close and sto the vfurther supply of fuel until combustlon has again lowered the level of the fuel bed.

Various modifications may be made without departing from the ature of my invention as defined in the c aims.

I desire it to be understood that where in the claims I sieak of supplying fuel,` or v fuel-feedinv devices, I do not mean to restrict myselfs to mechanism which exerts a positive propelling action on. the fuel, but intend to cover all devices which control the supply of fuel.

Although I have shown a particular form of my invention for the (purpose of description, itwill be understoo that I do not limlt myself to such construction, the scope of the claims.

l Ijlaving thus described; my invention, I claim as new and desire to secure by Letters Patent:

1. The combination with an apparatus having a combustion chamber, of a follower arranged to'rest on' top'of the fuel bed in said chamber and perforated to allow combustion gases to rise therethrough, and

means controlled by said follower, for sup- I() trolled by the movement of the follower, for

supplying fuel to said chamber.

3. The lcombination. with an apparatus having a1 combustionchamber, of a follower arranged to rest on top of the fuel bed in said chamber, and means controlled by the movement of said follower, for supplying fuel to"said chamber.

` 4. The combination with an apparatus having a combustion chamber, of a follower -arranged torest on to of the fuel bed in said chamber, a fuel-fee ngdevice, operating mechanism therefor, adapted to be ,driven by a fluid medium, a pipe connected with said mechanism and adapted to convey said fluid medium, a valve in said pipe, and an operative connection between the valve' and the follower. 5. The4 combination with an apparatus having a combustion chamber, of a follower arranged to yrest on to of the fuel bed in said chamber, a-pipe or conveying a fluid medium, a valve in said pipe, an operative connection between the valve and the follower aA cylinder connected with said pipe,

'a slide valve controlling the cylinder connections, a piston in the cylinder, and a fuel feeder operated by the piston and governing the slide valve. l*

In testimony whereof I haversigned 'my .name to this ,specification in thepresence of two subscribing witnesses. Y

CARL W. LEITENBERGER. AWitnesses:` v f l JAMES E. KIMMELL, ALEX N. HART. 

